System for making box blanks



July 21, 1936; J. s. sToKEs 'ET Al.

SYSTEM FOR MAKINGV Box BLANKS Filed Feb. 4, 1935 9 Sheets-Sheet l IlrlJfIlllll 'IN VEN TORS` #11ML ATTORNEY;

QM( @M QM @WIM Q(- @GYM VJuly 21, 1936 J. s. sTcKEs ET AL SYSTEM FORMAKING BOX BLANKS Filed Feb. 4,. 1935 9 sheets-sheet 2 l INVENTORS)fm/maw ffm ATTORNEY.

July 21, 1936. J. s. sToKEs ET AL SYSTEMYVFOR MAKING BOX BLANKS FiledFeb. 4, 1953 9 Sheets-Sheet NNN ai@ ATTORNEY.

July 21, .1936. l J. s. sToKEs ET AL SYSTEM FOR MAKQl/r B'OX BLANKS-vFiled Fel?. 4, 1953 9 Sheets-Sheet 4 Sum INVENTORS la "ATToRN1gY- J. S.STOKES ET AL SYSTEM FOR MAKING BOX BLANKS Jully 21, I1936.

' Filed Feb. 4, 1955 9 Sheets-Sheet 5 INVENToRs im ATTORNEY.

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July 21, 1936. J. s. STOKE/s Er AL 2,048,301

SYSTEM FOR MA/KING BX BLANKS Filed Feb. 4. 1953 9 Sheets-Sheet 8 VINVNTORS BY Mut' M a'/ MQLFQM' i21-A ATTORNEYQ.

July 21, 1936.` J. s. sToKEs ET Al.

v SYSTEM FOR MAKING BOX BLANKS FiledF'eb. 4, 1933 9 Sheets-Shim?l 9INVENTORS ki d@ A4 Patented .July 21, 1936 UNITED STATES PATENTY OFFICEamsn svsm son me nox amas poration olf Pennsy Appnnon februry 4, 1933,serial No. 655.194

ze 1111111.11.A (ci. ca -45) Our inven'tion relates to systems for boxblanks, box cover blanks, components for composite boxes, and the like,hereinafter generically termed box blanks.

In accordance with one aspect of our invention, a strip of box materialis scored longitudi-` nally and transversely, and-slitted crosswisebe.

- box.

Also in accordance with our invention, mechanism is provided for formingscored box blanks, or box components from strip box material; moreparticularly, structure for transversely scoring and/or slitting thestrip is mountedupon a carriage which feeds the strip toward notching orcutting mechanism which completes the formation of the blank;preferably, thefeeding movement of the carriage also effectslongitudinal scoring of the strip.

-In accordance with a modication of our invention. the notchinglcross-scoring and severance oi the strip are substantiallyconcurrentlyeffected to complete one blank and to form one end of thenext succeeding blank.

Further in accordance with our invention, after severance of avcompletedblank h'om the strip,itismovedawayiromthecutting mechanism. by atransfer devicepwhich, more specically, delivers it to a conveyor orother transporting means.

Also in accordance with may be disposed between the knives which effectlongitudinal scoring, and the notching or cutting mechanism, a`devicefor applying strips of tabbing materialv to overlie the scoring. Furtherin accordance with our invention, there may be provided -i'eedingmechanism in ad'- vance of the carriage operating alternately to provideslack or a festoon inthe strip; this i'eavture is particularly ofimportance when the strip is ofheavy box material, or whenlaminetedstrip is formed prior to or during the ieedlngoperation. t

Our invention also resides intherfeatures of construction, combination,1 and arrangement hereinafter described.

Y ing, and feeding structure shown in Fig. 1.

Fig. '1.

showninFlg.10..

For an understanding of our invention and for illustration of thepreferred form ofv mechanism, reference is to be had to the accompanyingdrawings in which:

Fig. 1 is a side elevational view of -a machine 5 for forming box blanksfrom strip material.

Fig. 2 is a detail view on enlarged scale,v o! parts shown in Fig. 1.

Fig. 3 is a top plan view oi the box strip illustrating the preparationof blanks.

Fig. 3d shows the completed blank..

v Fig. 4 illustrates the'strip as operated upon to form the maincomponent of a composite box.

Fig. 4a shows the completed blank or component.

Fig. 5 is a front elevational view. with parts in section, and onenlarged scale, o! slitting. scor- Fig. 6 is a side elevational view ofparts shown Fig. 'I is a top plan view. with parts in section. of theoperating means for the structure shown in Figs. 5 and 6.

Fis. 8 is a detail view taken on lines 8 8 oi.'

5 Fig. 9 is a detail view.'on enlarged scale, of a 2 scoring deviceshown in Fig. 1.

Fig. 10 is a i'ront elevational view, parts section, o! strip notchingor cutting devices 30 Fig. 11 is a side elevational view of the partsshowninFig.10. t

Fig. 12 is a detailed view in. side elevation, oi presser blockstructure in Fig. 10.

Fig. 13 isabottomplan viewofanotching or 35 cutting head shown in Fig.10.

. Fig. 14 is a. sectional view, in side elevation, oi'

Fig.15 isadetail viewot guidestructure Fig. 16 is a side elevationalview, on enlarged scale. and with parts in' seion, of mechanism shown inFig. 1.

Fig. 17 is a detail view, front elevation. taken on section line I1 -|`l,of Fig. 16.

Fig. 18- illustrates parts shown in Fig. 16 in another operatingposition.

Fig. 19 is a top ilanf-View ot' the structure .shown m rig. 1s. f

111g. 19a 1s an' end elevati@ yiew of srrvmg mechanism shown in Figs'.16 and 19.

Fig. 20 illustrates a modieation of the mechanism shown in Fig. 10.

Fig. 21 is a top plan view o! the notching and cutting arrangement ofFig. 20.k

Fig. 22 mustras a modification or feed carage of Fig 5 Fig. 23 is aplanl view of the gripper plate f-Fl8 I attachments for tsiibim;

Fig'. 24 illustrates and trimming the box'body strip. y l

Fig. 25 is a top plan view, with parts omitted for clarity, of theapparatus shown in Fig. 24.

Fig. 26 is a detail view, onl enlarged scale, of f tab-folding discsshown in Figs. 24 and 25.

Fig. 271s a detail view, `on enlarged scale of a tab-gluing roll shownin Fig. 25. v Figs. 28. 28a, 29, and 30 are sectional views of .box bothstrip with tabblug applied thereto.

Fig. 31 illustrates a preliminary feeding or festooning ,device for usewith the box-body machine of Fig. 1. A

Fig. 32 is-a. top plan view of Fig. 31 with parts broken away.

33 is a detail view on enlarged scale of laminated-lined strip `producedbythe mechaof Fig. 31. l

:sor

Referring to Fig. 1, the main drive shaft I- of the machine is driven asby motor 2 through -clutch device 3 provided with control means il.V Thedrinn 5, mounted upon shaft I and disposed eeiving end of the machine.

As shown more clearly in Figs. L5 and 6,r the shaft I2 passes throughthe unit Il mounted yupon the carriage 9 for reciprocal-.ion therewith.A

Gear I5 driven from shaft I2 by its engagement with the elongated key I6is disposed Within the unit, and is movable with it as the carriage isreciprocated parallel to the shaft I2. As shown, gear I5 by itsengagement with gear I1 drives the drum I8 having a cam groove I9. 'I'helever 2li whose lower end is pivoted to a xed point on the unit, isprovided with a cam follower 2I for engaging the groove I9. The upperend of lever 2li is connected by link 22 to the knee. of the toggleformed by. thev links 23, 24. 'I'he upper end of link 23 is connected bypin 25 to the vertically reciprocable slide 26,- and the llower end oflink 2l receives the pin 21 which extends between the side frames 28, 28of the unit. Acf4 cordingly, as the upper end of lever 20 is moved tothe left, the toggle'is straightened to mo've the slide 26 upwardlytowards the pressure'plate or member 29 which extends across the top ofthe unit.

Upon the upper face of the slide 26 are mounted suitable devicesforoperating upon the strip* of box material S which is threaded throughthe unit to passbelow pressure plate 23 and -above slide 26. With theparticular arrangement Vsliwn, ythe slide 2B carries three knives, 3l,3|,

and 32 which extend transversely of the strip.

so` adjusted that when the slide 26 ls in its up-v 'ipermofst position,the knives effect cross-scoring `of. the strip, as shown for example bythe lines infr, Fig. 3. The middle knife 3| is somewhat .higher so thatit cuts through' the strip to form aslit Z. However, this knife isshorter than the The timing is preferably such that the slide 2S ismoved upwardly to score and slit theJ strip S just prior vto thebeginning of forward or feed-Y ing movement of carriage 9, and the slideremains upduring this forward movement so that it advances the strip tothe left as viewed in Figs.

1 and 3. At' theend of this stroke the head 26V moves downwardly,releasing the 'strip -from clamping engagement and the head 26 remainsdown duringthe return-movement of the carriage to its initial position,completing one cycle `of operation of this unit of the machine.

As the strip is pulled forward by the unit Il, longitudinal scoring orcreasing y, 1l of the strip S' is effected by the disks 33,.orequ,`ivalent, at the receiving end of the machine. Preferably as shown,the strip S is positioned by the guiding members 34, 34 on oppositesides thereof which lead the strip between the upper pair of knives 33and the pressure roller 35 which extends between the side frames 36.Preferably the knives 33 are carried by individual supports 3l (Fig. 9)which are adjustable along the supporting member 38 so that the knivesmay be moved towards or away from each other on op positesides of themedian line Aof the strip S to vary the distance between the score linesy, y for diiferent sizes of boxes. For lbrevity, scoring vis used in ageneric sense to comprehend both scoring and creasing.

Preferably the supporting'member 38 carries several sets of scoringknives, and is rotatable, as by the handle 39, to bring a desired set ofknives into position beneath roll 35. 'I'his permits one set of knivesto be removed for sharpening without interrupting the operation of themachine except momentarily, orf permitsdiiferent sets of knives to beadjusted for di'erent sizes of boxes' so that change-over can beeffected by moving handle v39 to proper stop position to select theproper set of knives.

`As shown in Fig. 3, the scoring x, :rand y, u

`divides tnestnp s inte blanks B, Bl, Bz, etc.,

to be successively cut from ythe strip. The slits e effected by theknife 3i of unit I l extend at `least between( the longitudinal scoringy, y, and.

preferably somewhat beyond. In the strip, each blank comprises thebottom panel' b, the side panels s, s, and the end panels e, e, and thetrailing end of each blank is connected to the leading end of thesucceeding blank by the continuous portion W"which is removed, bymechanism now to be described.

The strip in front of the unit I 4 is advanced to pass beyond thecutting or notchingV device formed by the units 4U and 40a, which arefor removing the segments W, W, thereby to complete the severance of theblank BI, and'to corner notch the trailing end of blank BI and thevforward end' of the next succeeding blank B2. It is under- Theapparatus isl preferably arranged so' that. as

shown in Fig. 1 'and superposed Fig.. 3, when the unit Il is at the endof its feeding stroke, there is one blank between it and thenotching orcutting deviceslll, 40a, and the length of stroke is equal to thedistance between adjacent slits z, z,

i. e., twice the height of the box plus a dimension of the box bottom b,parallel to the direction of strip feed. In other' words, for eachforward movement of the unit Il the vstrip S is advanced to Van extentcorresponding to one blank, and for each operation of the cutting device40A which occurs when the unitv Il is stationary at the end of itsfeeding stroke, a pair of opposite segments As the unit 49a is aduplicate of unit 49, only the W are removed to complete one blank andto. finish .the forward end of the next blank; the finished blank isshown in Fig. 3a.

The mechanism for effecting removal of segments W is most clearly shownin Figs. 10 to 15.

latter is specincally described; it being understood that the operationof the units isV simultaneous. The gear Iii at the top of shaft Idrives, through gear 4I, the shaft 42 which slidably engages the hub ofgear 43 contained within unit 40 for driving, through gear 44, the drum45 having a cam groove 46. 'I'he lever 41 pivoted at its lower end tothe unit carries the cam follower 4I and the upper end of lever 41 isconnected by link 49 to the end of a toggle formed by the links 5I and5I to effect actuation of the'slide 52. In general, the mechanism foroperating the slides 52 and 52a is similar to that'for effectingreciprocation of slides 26 of unit I4. In moving upwardly, the slides 52and 52a press the opposite edges of the strip S against stationary knifestructure carried by the brackets 53, 53a.

For effecting removal of segments W, W, such as shown in Fig. 3, theknives are arranged as shown in Fig. 13. The "three knives 54, 55. and56 are held in position in the hollow frame 51 by screws 59, which clampthe knives between the filler blocks 59. To assist or effect removal ofthe segments W from 'the frame, the blocks 59 may comprise or may bebacked by suitable resilient material as sponge rubber.

It is to be understood, o'f course, that for dinerent sizes and shapesof blanks, the arrangement of the knives/and filler block will bedifferent to. accommodate the particular circumstances. v

The knives 56 are parallel to each other and cut the strip along thescoring y, 1l, while the knives 54 and 55 of each frame cut along theltransverse scoring z, z. As the slit z is at least as long as thedistance between the longitudinal scoring, as soon as the notching, orremoval of segments W, Wl is effected the severance of the first blankBi from the strip is completed.

Ihe mechanism described performs a method of forming box-blanksgenerally similar to that described and claimed in'my application SerialNo. 586,530, filed January 14, 1932, but which is specificallydifferentin that the stripis first slitted and the notching of theblanks utilized to l as stated above, advances the strinse-that theblank to be cut by the nextV gperationof the notching device actuallyextends substantially beyond the units 40, 40a, only the trailing end ofthe blank remainingunder the knives. 'I'his projecting part of thestrip, extends between the transfer vrolls Bn, 6I, Fig. 16, whichareconstantly revolving, though out of engagement with the blank. Afterseverance of the blank by completion of the notching operation, theserolls are brought into engagement with the'blank by mechanism now to bedescribed, to propel it to the left, Fig. 16, away from the cutting ornotching device 44,1440.

The lower transfer roll 9| which rotates about a iixed axis is drivenfrom the gear Il at thetop of shaft I by the train of gears 52, 53, 53a,lib, I4, 55, 55a, Si, and 61. The upper transfer roll 9|,

as shown most clearly in Figs. 19, 19a is jcurnaled in the ends of thearms 5l, il carried by the rockV ever, the notching knives `cut a blankfrom the strip, the cam 13, Fig. 16, rocks the bell crank lever 'u toraise the link 'is which effects clockwise rotation of the rock shaft 69to bring the roll 5I into momentary engagement with theupper face of theblank and to force it against the lower feed or transfer roll 6D. Therolls 6l, Il which are` rotating at high speed propel the blank to theleft, Fig. 16. They are then again momentarily brought together by cam13a to eject the segments ,l W which in the meantime have been pushed tothe left by feeding of strip S.

As shown by Fig. 2, the link member 15 is preferably divided and itssections joined by a resilient coupling; for example the upper section15a and lower section 15b are joined by the lost motion connectionafforded by the sleeve 1l secured to I one of them and a pin 11 securedto the other and slidable in the slot 1l of the sleeve. The thrust ofthe lower member 15b isrtransmitted `through the spring 19 disposedwithin the sleeve.

The ejected blank is delivered to the narrow conveyor belt 99. It ispressed down on the belt by-the rollers BI whose shafts are freeto moveup and down between the guides 82. The frame 83, carrying the guides issecured to the shaft 84 extending between the side frames of themachine. The sides of the blank on either side ofthe narrow conveyorbelt 9| aresuppcrted by the strips or plates 85. The conveyor belt 99 atits delivery end passes over and is driven by a pulley mounted upon theshaft l5 which is driven through the gearing 91, Il, 89, from gear 55.

Upon the same shaft are also mounted the pulleys 99, 9| which drivethe.spaced conveyor belts 92, 93, whose forward ends pass over thepulleys 94, at the delivery end of the machine. The chi s or' lsegmentsW do not reach Belts 92,' 93 iis/)they are not supported by ybelt Il orplates 95 in the gap between lthe notching head and belts 92, 93.

To veiitect movement of the blank to a predetermined position, a featurewhich is of importance when the machine is used for delivering theblanks in' succession and as formed. to

other, automatic apparatus, such as for example the box bendingmechanism shown-and described,

in cofpending application Serial No. 658,934, filed February 28,1933,there is provided a reciproeating slide' as. which is driven from niecam 91 secured to shaft I through the system includingy the Yoscillatinglever 93. gearseg-ment 99, andA gear IM, .the latter engaging the rackill of the slide. The receiving end of the bendinlr,` mechanism is shownin Fig. 1; its frame member FI 'is held to the delivery end of the boxbody machine. lwith its transfer arm |49 adapted to move toward and fromplate ili. A

When the rack moves to tlm right from the position shown in Fig. 18, thelinger |92 is erigaged by the plate |03 and forced to rotate in acounter-clockwise direction against the tension oi spring |04. Uponmovement to the left, the

iinger |02 swings to its upper position as it passes beyond plate |03 toextend above and engage the rear edge of a blank B which in the meantimehas been delivered by the conveyor belts 92, 93 to the split platestructure |05, to move the blank upon further movement of the slide 96to a denite predetermined position.

The machine described is adapted to make box blanks varying widely as toany one or more ot'their essential dimensions, simply by adjustment ofone or more of the various instrumentalities above described. Thescoringkm'ves 33 for longitudinal scoring are, as above stated,adjustable to vary the distance between the longif tudinal scoring. Thedistance between the transverse scores z,- :i:, is effected by changingthe arrangementA of the ller blocks which hold the knives 30 and 32 inposition upon the head or slide 26. The adjustment of the heads 40, 40ais effected simply by loosening the clamping nuts |06 of the associatedunit and revolving the handle |01 which is secured to the member |08threadably engaging the nut |09 depending from the slide 40 (or 40a).For boxes of diierent depth, the arrangement of knives 54, 55, and 56,issuitably changed, i. e., for deeper boxes the knife 56 is of suitablygreater length and the spacing between knives 54 and 55 iscorrespondingly increased.

As indicated, the frames 51 for holding the notching knives arek readilydisengageable'from the brackets 53, 53a for this purpose. It is onlynecessary to loosen the clamping screws which pass through the bracket53 into the threaded holes III of the guide structure lI2,

shown in Fig. 15. -When the nuts are tightened the two sections I I3,II3 flex slightly because of the reduced section joining them to theremainder of the guide. To remove the frame 51,

52a is variable to accommodate blanks of diierent thickness, by changeof .-the position of the lower pivot ||4 of toggle link 5|.Specifically, the pivot I |4- is eccentric to the shaft ||5 whichsupports it or with which it is integral. The ends of the shaft I I arejournaled in the side frames of the unit, and preferably one of them issuitably shaped or formed ior'application of a tool for rotating it; forexample, as shown in Fig. 12 e'ectively to change the lower pivot pointof link 5|. The nut I6 clamps the pin or shaft I I5 in its adjustedposition.

A generally similar arrangement is utilizedfor changing the upper limitposition of the slide 26 of the unit I 4, as shown most clearly in Fig.5.

The arrangement for changing the length of stroke of the carriage 8 forforming blanksy of different length, is most clearly shown in Figs, 1,'1v and 8. The lever 8, as above described, is oscillated by the cam 5.One end of the lever 8 is connected by the link member ||1 to one 4endof the member IIB pivoted at ||9 which is -of engagement with the plate,whereupon rotaare avoided. To vary the length o1' the stroke, the pin isshifted .radially-toward or away from the axis of rotation of itsdriving gear |24. I'he nut |26 vis loosened torelease the pin from theclamping atl'orded by the members |29 and |30, and then the hand wheel|3| is rotated, it being understood that the shaft |32 threadablyengages the block |33 to which the pin |25 is secured or with which itis integral. The position 'of the carriage at the end of its strokeispredetermined by changing the position of the crank pin in the4 slot |34or the connecting link or rod |26. With the nut |39.loosened, the gear|35 is rotated to revolve gear |36 whose hub is internally threadedtoreceive the screw |31 which has one end secured to the member|38 whichremains in ixed position-with respect to the pin |25 and may gv forexample, be a member encircling it. This rotation of gear |35 effectsmovement of the link |26 to the right or left and so directly changesthe position of the unit. When the-desired position has been attained,the nut |39 is tightened to clamp the member |38 against the link |26.

For access to the knives`30, 3|, and 32 for adjustment or replacement,the pressure plate 29 is adapted to be swung back; as shown in Figs. 5and 6 the nuts or threaded members 40, |40, may be unscrewed, at leastsuiliciently to permitl the clamping links II to be swung outwardly outtion of the handle |42 causes the .plate or member 29 to swing about itspivot 29a. The worm and gear drive |43, |44 ensures that the plate willremain in the position to which it is adjusted by the handle, the wormand gear forming a oneway driving connection. l

I'he unit I4 may'beadjusted 'with respect to carriage 9 by loosening thenut |445 by rotating the handle |46 which drives the screw |41threadably engaging the nut attached to the unit I4.

The same mechanism may also be used to make blanks which are adapted toform only the bot--V tom and sides, or bottom and ends, of a box, i. e.,a blank such as shown in Fig. 4a, it being understood that thecomponents of the box will be added and held in box forming position,generally as described and claimed in Stokes Patent No. 1,796,630. Theonly adjustments or changes necessary to produce this 'type of blank areto swing the handle 39 so that no. longitudinal scoring is eiected andto replace knives 54, 55 and 56 by a single knife in Veach head 40, 40ato complete the severance of the strip; i. e., the slitting eiected bythese two knives is in effect the continuation of slit z, all as clearlyshown in Fig. 4 and as may be readily understood from the abovedescription of the apparatus.

By a slight modcation of the heads I4, 40, and 40a, the cross-scoringand notching can all be effected by heads 40 and 40a, slide I4 Vthenbeing utilized only for feeding of the strip. Re ferring to Fig. 20, theslides 52 and 52a of the heads 40, 40a., are joined by the projectingplate |50 upon which is mounted the clamping frame |5| for both sets ofnotching knives 54, 55.and 85 56, slitting knife 3|, and scoring orcreasing knives'32, 32. As the plate |50 is raised by the plungers 52,52a, it presses the box strip S against the back plate |52 which extendsbetween and is connected to the lheads 40, 40a.

With this'modiiication of the notching heads, the construction of thefeed slide f4 may be simplified, as shown in'Figs. 22 and 23. Upon theplunger 26 is mounted the plate |53 to which is secured the clamping bar|54, preferably of 15 rubber, which when the pllmger is raised clampsthe box strip S against theback plate |55 extending between the ends ofthe U-shaped frame member I of the Vslide Il. y ..f'

Formaking the main component of threepiece boxes with the moditledconstruction, the handle Il may be rotated to swing the scoring .knives33 away from engagement with the strip S, and inthe heads 40, lla, Figs.20, 21, the notching knives il, 55, and 56 are omitted. The knife 3|(Fig. 2l) for severing the strip, and knives I2 for scoring or creasingit, will ordinariiy under these circumstances be at least as wide as thestrip.

The blanks may be tabbed concurrently withV their formation from thestrip by the tabbing at` tachments generally indicated by T, Figs. 24and 25. 'I'his unit or attachment consists of a plate- Ill, secured toor mounted upon the frame F of the machine shown in Fig. l between thefeed imit I4 and the receiving or right-hand end of the machine Upon thesupport |541 are adjustably secured the two tabbing heads |58, lilawhich are essential duplicates.' Each supports a reel III for carrying aroll R of tab strip t which is fed into engagement with the surface ofthe adhesive applying roll IBII which dips into adhesive contained inthe reservoir lil of the head. The strip, after leaving roll |60 passesover the idler roll |62 and its coated face is broughtinto engagementwith the lower surface of the box 'strip S.

'rnc composite strip formed by the strip s and the applied strips tpassabove the brushes |53.

.erected by knives sa, as. when the ditancc b etween scoring knives 33is changed for different widths of box bottom, the tabbing device isco'rrespondingly adjusted by moving units |58, |5811 toward or away fromeach other on opposite sides of the median line.

As it is usually necessary to bend the side walls of a box blank almostflat against the box bottom to insure that the sides of the ilnished bxshall not be bowed or distorted, there is 'a strong tendency for thetabs to loosen or pull awayif they -have been applied to the box blankin the hat. To overcome this tendency, the tab strip t is provided witha -slack'or unapplied portion h,`which when the box side panel p is.bent,

as shown in Fig. 29, allows the bending to take place withoutvtendencylfor the applied portions of the tab to pull away from the box material.Consequently, when, the box panel is restored to its normal or verticalposition, Fig. 30, the applied portions of the tab are still in theiroriginal position. The-slack portion ofV the tab is produced as the tabstrip is withdrawn from the roll R and fed towards the'region o fitsapplication. to thebox strip S. the tab strips t is fed through theangularly ad- :instableA guide III andpasses betweenthe two rollers |55,III, shown in detail in Fig. 26, which are staggered so that thefiangeoiroller |66 lies between the ilanges of roller |65, so that the, stripfed between the rollersijs provided 4with a double tuck or loop fold h..'I'he heads lil, |5811 are so adjusted that the slack or folded portionoi the tab lies opposite the scoring or creasing of to trim its edges.

lof the box strip.

' rolls lil. Thereafter the strips pass over idler T, Fig. 24, toperform the method described and Speciilcally each of' thestripS.Thctabbingattachmentl'canbe used for other purposes,'for example itmaybe employed to form box blanks whose sides may be' of-greater thicknessthan the box bottoms by providing rolls l?.v of box body material ratherthan 5- tab strip material: The method of forming a box blank of thischaracter is described and claimed i in co-pending application SerialNo. 485,631, led October'` 1, 1930. 1

Furthermore, the tabbing units may be used to cover the side panels ofthe blank, and/or The strip removed from the rolls -R may be ofsuiiicient width, as shown in Fig. 28a, to cover the side panel P of thebox to form the tab, and/or to trim or cover the edge e of each side ofthe strip; Inthis case the outer edgesof the strip tl as applied willproject beyond the sides of the box strip. 'I'hese p'rojecting edges areturned ilrst vertically by the rolls Iiland then folded down against theupper surface of the boxv strip S by'fthe ilanged wheels ISI. Thebrushes Ii! driven by motor |10 eil'ectf more intimate engagementbetween the turned over/edge f of strip'tl and the upper surface Whenthe trimming strip g is separate from the tab strip t, i. e., when it isnot: desired to cover the side panel of the box from the box strip, thetrimming strip is removed from the roll RI supported by reels |1I of theedge vtrimming attachment TI. As shown most clearly vinA Figs. 24 and 25the strip g removed from roll Rl' is threaded through the tabbing headsso as to receive a coating of adhesive from the glue rolls of thetabbing heads and are pressed against the box strip at its edges byrolls |12. UAS described before, the projecting portions of the trimmingstrip g are turned upwardly and over the -edge of the box strip andthence downwardly into engagement with its top surface. AThe edge-trimming attachment Tl also comprises heads .which areadjustable-towards and from each other on opposite sides of the medianline of the machine to accommodate various sizes .of box strip.

In the making cf three/ piece boxes, tab strip may be applied to theedges of strip S, generally as shown-in Fig. 4,. by the tabbingattachments claimed in application Serial N0. 480,432, med

' September 8, 1930.

Alternately, the longitudinal scoring maybe retained and the crossscoring omitted by removal of knives 3l, 32 and replacement of knives5l, 55,- and 5S by a single knife for extending slit z tothe edges ofstrip Sto form blanks used in the method claimed in Patent N0.1,880,288.

Particularly when the box material 'is heavy.. it is desirable toprovide .a preliminary feed for the strip instead'. of requiring ltheslide I4 to move the strip directly from a roll./ The mecha' nism shownin Figs. 31 and 32 is for producing a liminary feeding mechanism. Asa'rm 1l swings: counter-clockwise the bell-crank lever |18con Ilcctedthereto by rod |19 Swings 7 6' S removed from roll R2.

As 'the arm |11 moves -in clockwise direction. v

the arm |18 swings upwardly to leave the loop U loose or slack, so thatslide I4 of the box body machine in its next forward or feedingmovement, has only to shorten the loop U and need not effect of itselfany rotation of the roll R2. The brake III prevents the roll fromrotating after arm |18 has movedto its maximum position, i. e., itovercomes the tendency of the roll to continue in motion after the arm|18 has lengthened U to the desired extent.

If desired, the box blanks may be lined while still in the form of boxstrip. The strip of lining material L removed from roll R3 is coatedcreasing knives lib with adhesive as it passes over the applying roll |8and is wiped into engagement with the upper surface of the box strip Sby the brushes |82' at the end of pivoted arm |88.

The use of the festooning or preliminary feedingdevice is also desirablewhen the strip S is -made of several strips of'box material brought intoadhesive engagement to form laminated strip S, because otherwise a muchheavier load would be imposed upon the feeding slide Il, and` alsosincethe use of the-festooning device as herein# after described precludesslippage or relative movement between the laminations of the strip.

From the second roll RA of box body material is removed strip S2 whichis brought into engagement with the lower surface of the strip SI whichfor laminated box work has been coated -with adhesive during passage ofthe strip over glue applying roll |88 which' preferably is grooved toapply the adhesive in stripes. 'I'he arm` |85 is connected throughrod|19 tothe swinging arm |11 to produce slack in strip S2. Brake member|86 `prevents the roll -R8 from overtravelling. Since in laminated boxblanks, it is desirable that the scoring of the inner lamination shallbe somewhatcloser together than the scoring of the outer lamination orlaminations, and since withthe box machine of Fig. 1 individual scoringof the laminations could not be effected, the preliminary feedingmachine or festooner F|` is provided with the scoring heads |81, |88.Detail description of these units is not necessary-as theyaregenerallysimilal" in construction-to the longitudinal scoring head ofthe machine of Fig. l. The scoring -or creasing knives-of the severalunits are individually adjustable toward andaway from the center line ofthe machine. T he several heads k|89 having xed' lower rolls |80 andupper pressure rolls |8| each at the end of a pivoted arm vIII! are forthe purpose of holding the strip While we havev illustrated anddescribed our *preferred types ot blank-forming mechanisms, it'

is to be understood that our invention is not;`

limited thereto butis coextensive in scope with ourappendedelaims. j

What we claim is: -LReciprocating structure for intermittently holdingand'advancina a strip ofvbox material.

the loop,

direction to lengthen the loop Uof the box strip for scoring the striplongitudinally during its movement by said structure, means fornotching, transversely scoring and severing said strip, and mechanismfor operating said means in timed relation'to said structure to effectnotchingg.

2. Reciprocating structure for intermittentlyholding and advancing astrip of box material, means for simultaneously notching, scoring andsevering said strip to complete one blank and to form the leading endvof the next succeeding blank. and mechanism for operating said means intimed relation to vsaid structure to eilect notching. scoring andsevering of the strip while it is at rest. l

3. Reciprocating structure for intermittently advancing astrip of boxmaterial. means carried thereby for transversely scoring said strip, andmeans for actuating said scoring means while said -structure is at rest.

4. Reciprocating structure for intermittently advancing a strip of boxmaterial, and scoring means carried thereby for scoring the strip whilesaid structurels at rest and holding'. it during forward movement ofsaid structure.'

5. Mechanism for feeding and scoring a strip of box material comprisingreciprocating structure, scoring means carried thereby, and means foractuating said scoring means to clamp and score said strip prior toforward movement of said structure'and for releasing the strip prior toreturn movement of said structure.

6. for making Ybox blanks comprising c reciprocating, rude forintermittently en gagingl and `feeding a strip of box material of width'corresponding in width to the length or width ofthebox blanks step bystep, means for transverselyvscoring thestrip while at rest, and

means `for varying the stroke of said slide to vary the extent of feedof the strip per step.

.'l. Mechanism for feedingand scoring astr cf box hmntcrici'ccmprisingreciprocating structure, v'scoring 'means carried thereby, means foractuating vsaid scoring means to clamp and score said strip `priortoforward movement of said structure and for releasing the strip prior 'tore-V f turn movement of said structure. and means-for varying the extentof movement of said structure to vary the extent of feed of the strip.

8,. -Means for 4scoring a strip of box material,

mechanism for severing the scored-rstrip, and

reciprocating structure fory engaging and td# vancing'the strip fromsaid scoring means' to I the strip.

10. Means for longitudinally scoring a strip ofbox material,mechanismfor notching the oppo-v site sides of the strip, andreciprocating means vfor feeding the strip from said scoring means tosaid notching mechanism and including `means for transversely scoringthe strip.

' 11. Means for longitudinally scoring astrip of box materiahmechanismfor notchingthe opposite sides oi' the strip, and vreciprocating meansfor feeding the strip from said scoring means to said notching mechanismandincluding means for effecting parallel scores extending translverselyof the strip and for slitting the strip transversely Ybetween saidtransverse scores to separate it between the vlongitudinal scoring.

`12. Means for feeding a strip of box material, as rotatable mountingfor a plurality of scoring structures spacedl angularly about the axisof said mounting, and means for rotating said mounting to differentangular positions selectively to bring desired scoring structure intoposi tion for scoring the strip during feeding thereof. 13. Mechanismfor forming box blanks from a strip of box material comprising meansforintermittently feedingthe strip, means for longitudinally scoring thestrip during said feeding thereof, means operative while the strip is atrest to cut blanks therefrom in succession, and means for delivering theblanks individually and in 'succession from said cutting means to apredetermined position comprising reciprocating means having gripperstructure for clamping an edge of a blank, and means forreleasing saidgripper structure upon delivery of the blank to said pre-f determinedposition.

while the strip is at rest to notch and sever the strip to complete oneblank and to form the leading end of the next succeeding blank, and

means for delivering the completed blanksindividually and in successionlfrom said cutting means to a predetermined position comprising anendless conveyor, and reciprocating'means having gripper structure forengaging a blank on said conveyor, and -means for releasing said gripperstructure upon delivery of the blank to said predetermined position.

15. `Mechanism for cutting box blanks in suc- -cession from a strip ofbox material, transfer rolls disposed on opposite sides of stripprojecting beyond said mechanism, and means operative after theprojecting strip has been cut by said mechanism to form a box blank vtoeffect feeding engagement thereof with said rolls for transfer from saidmechanism.

16. Mechanism for forming-box blanks from a strip of box material, astrip cutting device,

transfer rolls disposed beyond said device, means operatingintermittently to advance-the strip to move the leading end thereofbeyond said device andbetween said rolls while separated, means foroperating said cutting mechanism while the strip is at rest to cut-olf.the forward portion to form a blank, and means for thereafter effectingrelative-movement of the transfer Arolls toward each other to engagesaid blank for transferring it Vfrom said mechanism.

17. Mechanismfor forming box blanks comprising means for supporting aroll of strip box material, means for cutting the strip into box blanks,feeding means for intermittently advancing the strip'to said cuttingmeans, intermittently operating means for festooning the srtripv betweensaid roll and said strip advancing means, Aand means for adjusting theextent of movement of said feeding means independently of saidfestooning means.

18. Mechanism for forming laminated, box blanks comprising means forsupporting rolls of strip box material, means for effecting adhesiveengagement between strips removed from said Y rolls t6 form laminatedstrip, means 'for cutting the laminated strip into boxblanks, `means forinto adhesive engagement with a strip of box between .each of said rollsand the region of mechanism to effect clamping of the' strip by saidclamping means before and during forward movement of said carriage andclamping of the the path of feed of a strip of box material,recipvprising strip-severing units on opposite sides of tion with saidfeeding means to festoon the laminated strip prior to feeding by saidfeeding means, and means for adjusting the extent of 5 movement of saidfeeding means independently of said festooning means.

19. Means for feeding and scoring a strip of box body material, meansfor feeding tab strip into adhesive engagement withsaid strip of boxmaterial to overlie the scoring, means for producing a fold in the tabstrip prior to its application to said strip of box material'to permitsubsequent bending fat the scoring with elimination of tendency for thetab strip to separate from the box body material or to split, and meansfor, applying adhesive to the folded strip.

20. Boxl body aparatus comprising means for feeding a strip of box-bodymaterial from a roll lining material and means for producing slack insaid strip ofbox material between said roll and the region of joinder ofsaid strip with said strip of lining material.

21. Box body apparatus comprising means for feeding strips of box-bodymaterial fromrolls into adhesive engagement, and means for producingslack in said strips of box body material joinder or said strips. 3

22. Mechanism formaking box blanks comprising a reciprocating carriage,strip-clamping means carried thereby, strip-severing and clampingmechanism adjacent a limit of travel of said carriage, means foroperating said carriage, said strip-clamping means and saidstrip-severing and clamping .mechanism to eilect clamping of the stripby said clamping meansv before and during forward movement of vsaidcarriage and clamping of the strip by said clamping mechanism before andduring return movement of the carriage, and means for adjusting thelimits of movement of said carriage.

23. Mechanism for making box blanks comprising a reciprocatingcarriage', strip-clamping means carried thereby, strip-severing andclamping mechanism adjacent a limit of travel of 'said carriage; ymeansfor operating said carriage, stripclamping means and strip-severing andclamping strip by said clamping mechanism before and during returnmovement of the carriage, and means for independently adjusting theextent and limits of movement of 'said carriage. 24. Mechanism formaking box blanks comprising strip-severing units on -opposite sides ofrocating structure for feeding said strip, means for adjusting saidunits 'toward and away from each other, and means'for varying theinitial and final positions of said feeding structure.

25. Mechanism for making box blanks comthe path of feed of a strip ofbox material, reciprocating structure for feeding said strip, means foradjusting 4said umts toward and away from each other, means for varyingthe initial Vand final 4positions of said feeding structure, scoringunits adjacent opposite edges of the strip, and means permittingadjustment of said units toward andV away from each other.

26. Means for feeding and scoring a strip of 75 sheet materiai'toseparate from the box body material or to split, and means for renderingadhesive the portion of the box-body material engaging surface of thestrip of sheet material which is not included in the fold.

'l .lOl-IN S. STOKES.

lERNEST G. RIDER.

, CERTIFICATE or common..

Pater-n,i No; 2,048,301. y

l .my 21, 193e.

' JoHN s. s'roKEs. ET AL.

It ie` hereby certified that error appears in Itheprinted specificationof the above numbered patent requiring correction as followsz Page '7.firsteolumn. line 6, claim 12, for .'as" read a; and that the .saidLetters Pate should be read'with this correction therein that the jsrecord of the case .inl th'e- Patent Office.

Signed and sealed this 22nd day of December, A. D. 1936.

(Seal) A Henry' Van Arsrlalef`v l Acting liiolmissipner` ofQPatnta,

ame inay conform to sheet materiai'to separate from the box bodymaterial or to split, and means for rendering adhesive the portion ofthe box-body material engaging surface of the strip of sheet materialwhich is not included in the fold.

'l .lOl-IN S. STOKES.

lERNEST G. RIDER.

, CERTIFICATE or common..

Pater-n,i No; 2,048,301. y

l .my 21, 193e.

' JoHN s. s'roKEs. ET AL.

It ie` hereby certified that error appears in Itheprinted specificationof the above numbered patent requiring correction as followsz Page '7.firsteolumn. line 6, claim 12, for .'as" read a; and that the .saidLetters Pate should be read'with this correction therein that the jsrecord of the case .inl th'e- Patent Office.

Signed and sealed this 22nd day of December, A. D. 1936.

(Seal) A Henry' Van Arsrlalef`v l Acting liiolmissipner` ofQPatnta,

ame inay conform to

